v0.4.2 more code cleanups and improvementsv0.4.2

    Add command line argv handling using go-arg
    make hello world dumb stupid simple again
    more swtiching to common code
    move debugging options to support go-args
    more debugging output cleanup
    more debugging cleanups
    fix null pointer crash

3 files changed, 132 insertions, 35 deletions

diff --git a/cmds/helloworld/main.go b/cmds/helloworld/main.go
index bc1ea5a..3ae3b07 100644
--- a/cmds/helloworld/main.go
+++ b/cmds/helloworld/main.go
@@ -8,57 +8,37 @@ import 	(
 )
 
 func main() {
-	f, err := os.OpenFile("/tmp/guilogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
-	if err != nil {
-		log.Fatalf("error opening file: %v", err)
-	}
-	defer f.Close()
-
-	log.SetOutput(f)
-	log.Println("This is a test log entry")
-
-	gui.Main(initGUI)
+	gui.Main(myGUI)
 }
 
 // This initializes the first window
-func initGUI() {
+func myGUI() {
 	var w *gui.Node
 	gui.Config.Title = "Hello World golang wit/gui Window"
 	gui.Config.Width = 640
 	gui.Config.Height = 480
-	gui.Config.Exit = myDefaultExit
+	gui.Config.Exit = myExit
 
 	w = gui.NewWindow()
-	w.Dump()
-	addDemoTab(w, "A Simple Tab Demo")
-	addDemoTab(w, "A Second Tab")
+	addHelloWorld(w, "A Simple Tab")
 }
 
-func addDemoTab(window *gui.Node, title string) {
-	var newNode, g *gui.Node
+func addHelloWorld(window *gui.Node, title string) {
+	var newNode, g, tb *gui.Node
 
 	newNode = window.NewTab(title)
-        log.Println("addDemoTab() newNode.Dump")
-        log.Println("addDemoTab() newNode.Dump")
-        log.Println("addDemoTab() newNode.Dump")
-        log.Println("addDemoTab() newNode.Dump")
-	newNode.Dump()
 
-	g = newNode.NewGroup("group 1")
-        log.Println("addDemoTab() g.Dump")
-        log.Println("addDemoTab() g.Dump")
-        log.Println("addDemoTab() g.Dump")
-        log.Println("addDemoTab() g.Dump")
-	g.Dump()
-	// os.Exit(0)
-	dd := g.NewDropdown("demoCombo2")
-	dd.AddDropdown("more 1")
-	dd.AddDropdown("more 2")
-	dd.AddDropdown("more 3")
+	g = newNode.NewGroup("hello")
+	tb = g.NewTextbox("hello world box") // when debugging, this string will be used
+	tb.OnChanged = func(*gui.Node) {
+		s := tb.GetText()
+		log.Println("text box =", s)
+	}
+	tb.SetText("world")
 }
 
-func myDefaultExit(n *gui.Node) {
-        log.Println("You can Do exit() things here")
+func myExit(n *gui.Node) {
+        log.Println("exit() here")
 	os.Exit(0)
 }
 
diff --git a/cmds/textbox/Makefile b/cmds/textbox/Makefile
new file mode 100644
index 0000000..de22345
--- /dev/null
+++ b/cmds/textbox/Makefile
@@ -0,0 +1,13 @@
+run: build
+	./textbox --guidebug
+
+build-release:
+	go get -v -u -x .
+	go build
+
+build:
+	GO111MODULE="off" go get -v -x .
+	GO111MODULE="off" go build
+
+update:
+	GO111MODULE="off" go get -v -u -x .
diff --git a/cmds/textbox/main.go b/cmds/textbox/main.go
new file mode 100644
index 0000000..faf8b86
--- /dev/null
+++ b/cmds/textbox/main.go
@@ -0,0 +1,104 @@
+// This creates a simple hello world window
+package main
+
+import 	(
+	"os"
+	"log"
+	"fmt"
+	"git.wit.org/wit/gui"
+	arg "github.com/alexflint/go-arg"
+)
+
+type LogOptions struct {
+	LogFile string
+	Verbose bool
+	GuiDebug bool `help:"open up the wit/gui Debugging Window"`
+	GuiDemo bool `help:"open the wit/gui Demo Window"`
+	User string `arg:"env:USER"`
+}
+
+var args struct {
+	Foo string
+	Bar bool
+	LogOptions
+	gui.GuiOptions
+}
+
+
+func main() {
+	arg.MustParse(&args)
+	fmt.Println(args.Foo, args.Bar, args.User)
+
+	gui.Config.Options.Debug = args.Debug
+	gui.Config.Options.DebugChange = args.DebugChange
+	gui.Config.Options.DebugDump = args.DebugDump
+	gui.Config.Options.DebugNode = args.DebugNode
+	gui.Config.Options.DebugTabs = args.DebugTabs
+
+	/*
+	f, err := os.OpenFile("/tmp/guilogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
+	if err != nil {
+		log.Fatalf("error opening file: %v", err)
+	}
+	defer f.Close()
+
+	log.SetOutput(f)
+	log.Println("This is a test log entry")
+	*/
+
+	gui.Main(initGUI)
+}
+
+// This initializes the first window
+func initGUI() {
+	var w *gui.Node
+	gui.Config.Title = "Hello World golang wit/gui Window"
+	gui.Config.Width = 640
+	gui.Config.Height = 480
+	gui.Config.Exit = myDefaultExit
+
+	w = gui.NewWindow()
+	w.Dump()
+	addDemoTab(w, "A Simple Tab Demo")
+	addDemoTab(w, "A Second Tab")
+
+	if (args.GuiDemo) {
+		gui.DemoToolkitWindow()
+	}
+
+	if (args.GuiDebug) {
+		gui.DebugWindow()
+	}
+}
+
+func addDemoTab(window *gui.Node, title string) {
+	var newNode, g, g2, tb *gui.Node
+
+	newNode = window.NewTab(title)
+        log.Println("addDemoTab() newNode.Dump")
+	newNode.Dump()
+
+	g = newNode.NewGroup("group 1")
+	dd := g.NewDropdown("demoCombo2")
+	dd.AddDropdown("more 1")
+	dd.AddDropdown("more 2")
+	dd.AddDropdown("more 3")
+	dd.OnChanged = func(*gui.Node) {
+		s := dd.GetText()
+		tb.SetText("hello world " + args.User + "\n" + s)
+	}
+
+	g2 = newNode.NewGroup("group 2")
+	tb = g2.NewTextbox("tb")
+	log.Println("tb =", tb.GetText())
+	tb.OnChanged = func(*gui.Node) {
+		s := tb.GetText()
+		log.Println("text =", s)
+	}
+}
+
+func myDefaultExit(n *gui.Node) {
+        log.Println("You can Do exit() things here")
+	os.Exit(0)
+}
+